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Finding the Fourth Proportional to 572.02, 858.08 and 247.40

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Solution

The fourth proportional to 572.02, 858.08 and 247.40 is: 371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.02 : 858.08 = 247.40 : x
  2. Step 2: Convert to fraction form
    572.02/858.08 = 247.40/x
  3. Step 3: Cross multiply
    572.02x = 858.08 × 247.40
  4. Step 4: Simplify right side
    572.02x = 212,288.99
  5. Step 5: Solve for x
    x = 212,288.99/572.02
  6. Step 6: Final answer
    x = 371.12

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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.