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Finding the Fourth Proportional to 907.17, 1,251.83 and 508.76

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Solution

The fourth proportional to 907.17, 1,251.83 and 508.76 is: 702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.17 : 1,251.83 = 508.76 : x
  2. Step 2: Convert to fraction form
    907.17/1,251.83 = 508.76/x
  3. Step 3: Cross multiply
    907.17x = 1,251.83 × 508.76
  4. Step 4: Simplify right side
    907.17x = 636,877.88
  5. Step 5: Solve for x
    x = 636,877.88/907.17
  6. Step 6: Final answer
    x = 702.05

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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.