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Finding the Fourth Proportional to 501.75, 752.64 and 258.15

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Solution

The fourth proportional to 501.75, 752.64 and 258.15 is: 387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.75 : 752.64 = 258.15 : x
  2. Step 2: Convert to fraction form
    501.75/752.64 = 258.15/x
  3. Step 3: Cross multiply
    501.75x = 752.64 × 258.15
  4. Step 4: Simplify right side
    501.75x = 194,294.02
  5. Step 5: Solve for x
    x = 194,294.02/501.75
  6. Step 6: Final answer
    x = 387.23

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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.