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Finding the Fourth Proportional to 717.31, 1,075.02 and 425.04

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Solution

The fourth proportional to 717.31, 1,075.02 and 425.04 is: 637.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.31 : 1,075.02 = 425.04 : x
  2. Step 2: Convert to fraction form
    717.31/1,075.02 = 425.04/x
  3. Step 3: Cross multiply
    717.31x = 1,075.02 × 425.04
  4. Step 4: Simplify right side
    717.31x = 456,926.50
  5. Step 5: Solve for x
    x = 456,926.50/717.31
  6. Step 6: Final answer
    x = 637.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.