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Finding the Fourth Proportional to 881.34, 1,216.18 and 508.30

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Solution

The fourth proportional to 881.34, 1,216.18 and 508.30 is: 701.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.34 : 1,216.18 = 508.30 : x
  2. Step 2: Convert to fraction form
    881.34/1,216.18 = 508.30/x
  3. Step 3: Cross multiply
    881.34x = 1,216.18 × 508.30
  4. Step 4: Simplify right side
    881.34x = 618,184.29
  5. Step 5: Solve for x
    x = 618,184.29/881.34
  6. Step 6: Final answer
    x = 701.41

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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.