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Finding the Fourth Proportional to 572.30, 858.53 and 247.66

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Solution

The fourth proportional to 572.30, 858.53 and 247.66 is: 371.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.30 : 858.53 = 247.66 : x
  2. Step 2: Convert to fraction form
    572.30/858.53 = 247.66/x
  3. Step 3: Cross multiply
    572.30x = 858.53 × 247.66
  4. Step 4: Simplify right side
    572.30x = 212,622.01
  5. Step 5: Solve for x
    x = 212,622.01/572.30
  6. Step 6: Final answer
    x = 371.52

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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.