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Finding the Fourth Proportional to 887.14, 1,224.36 and 509.17

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Solution

The fourth proportional to 887.14, 1,224.36 and 509.17 is: 702.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.14 : 1,224.36 = 509.17 : x
  2. Step 2: Convert to fraction form
    887.14/1,224.36 = 509.17/x
  3. Step 3: Cross multiply
    887.14x = 1,224.36 × 509.17
  4. Step 4: Simplify right side
    887.14x = 623,407.38
  5. Step 5: Solve for x
    x = 623,407.38/887.14
  6. Step 6: Final answer
    x = 702.72

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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.