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Finding the Fourth Proportional to 881.19, 1,216.01 and 508.12

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Solution

The fourth proportional to 881.19, 1,216.01 and 508.12 is: 701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.19 : 1,216.01 = 508.12 : x
  2. Step 2: Convert to fraction form
    881.19/1,216.01 = 508.12/x
  3. Step 3: Cross multiply
    881.19x = 1,216.01 × 508.12
  4. Step 4: Simplify right side
    881.19x = 617,877.23
  5. Step 5: Solve for x
    x = 617,877.23/881.19
  6. Step 6: Final answer
    x = 701.19

Related Problems

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Half scale
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Double scale
Find fourth proportional to 882.19, 1,217.39 and 509.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.