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Finding the Fourth Proportional to 710.04, 1,064.53 and 478.28

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Solution

The fourth proportional to 710.04, 1,064.53 and 478.28 is: 717.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.04 : 1,064.53 = 478.28 : x
  2. Step 2: Convert to fraction form
    710.04/1,064.53 = 478.28/x
  3. Step 3: Cross multiply
    710.04x = 1,064.53 × 478.28
  4. Step 4: Simplify right side
    710.04x = 509,143.00
  5. Step 5: Solve for x
    x = 509,143.00/710.04
  6. Step 6: Final answer
    x = 717.06

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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.