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Finding the Fourth Proportional to 907.47, 1,252.37 and 514.53

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Solution

The fourth proportional to 907.47, 1,252.37 and 514.53 is: 710.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.47 : 1,252.37 = 514.53 : x
  2. Step 2: Convert to fraction form
    907.47/1,252.37 = 514.53/x
  3. Step 3: Cross multiply
    907.47x = 1,252.37 × 514.53
  4. Step 4: Simplify right side
    907.47x = 644,381.94
  5. Step 5: Solve for x
    x = 644,381.94/907.47
  6. Step 6: Final answer
    x = 710.09

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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.