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Finding the Fourth Proportional to 907.97, 1,252.90 and 529.74

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Solution

The fourth proportional to 907.97, 1,252.90 and 529.74 is: 730.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.97 : 1,252.90 = 529.74 : x
  2. Step 2: Convert to fraction form
    907.97/1,252.90 = 529.74/x
  3. Step 3: Cross multiply
    907.97x = 1,252.90 × 529.74
  4. Step 4: Simplify right side
    907.97x = 663,704.98
  5. Step 5: Solve for x
    x = 663,704.98/907.97
  6. Step 6: Final answer
    x = 730.98

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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.