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Finding the Fourth Proportional to 907.13, 1,251.53 and 627.26

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Solution

The fourth proportional to 907.13, 1,251.53 and 627.26 is: 865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.13 : 1,251.53 = 627.26 : x
  2. Step 2: Convert to fraction form
    907.13/1,251.53 = 627.26/x
  3. Step 3: Cross multiply
    907.13x = 1,251.53 × 627.26
  4. Step 4: Simplify right side
    907.13x = 785,025.31
  5. Step 5: Solve for x
    x = 785,025.31/907.13
  6. Step 6: Final answer
    x = 865.40

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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.