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Finding the Fourth Proportional to 710.02, 1,065.84 and 494.56

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Solution

The fourth proportional to 710.02, 1,065.84 and 494.56 is: 742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.02 : 1,065.84 = 494.56 : x
  2. Step 2: Convert to fraction form
    710.02/1,065.84 = 494.56/x
  3. Step 3: Cross multiply
    710.02x = 1,065.84 × 494.56
  4. Step 4: Simplify right side
    710.02x = 527,121.83
  5. Step 5: Solve for x
    x = 527,121.83/710.02
  6. Step 6: Final answer
    x = 742.40

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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.