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Finding the Fourth Proportional to 503.57, 751.53 and 490.61

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Solution

The fourth proportional to 503.57, 751.53 and 490.61 is: 732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.57 : 751.53 = 490.61 : x
  2. Step 2: Convert to fraction form
    503.57/751.53 = 490.61/x
  3. Step 3: Cross multiply
    503.57x = 751.53 × 490.61
  4. Step 4: Simplify right side
    503.57x = 368,708.13
  5. Step 5: Solve for x
    x = 368,708.13/503.57
  6. Step 6: Final answer
    x = 732.19

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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.