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Finding the Fourth Proportional to 901.55, 1,244.12 and 508.57

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Solution

The fourth proportional to 901.55, 1,244.12 and 508.57 is: 701.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.55 : 1,244.12 = 508.57 : x
  2. Step 2: Convert to fraction form
    901.55/1,244.12 = 508.57/x
  3. Step 3: Cross multiply
    901.55x = 1,244.12 × 508.57
  4. Step 4: Simplify right side
    901.55x = 632,722.11
  5. Step 5: Solve for x
    x = 632,722.11/901.55
  6. Step 6: Final answer
    x = 701.82

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Double scale
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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.