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Finding the Fourth Proportional to 555.17, 829.04 and 485.24

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Solution

The fourth proportional to 555.17, 829.04 and 485.24 is: 724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.17 : 829.04 = 485.24 : x
  2. Step 2: Convert to fraction form
    555.17/829.04 = 485.24/x
  3. Step 3: Cross multiply
    555.17x = 829.04 × 485.24
  4. Step 4: Simplify right side
    555.17x = 402,276.80
  5. Step 5: Solve for x
    x = 402,276.80/555.17
  6. Step 6: Final answer
    x = 724.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.