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Finding the Fourth Proportional to 648.47, 972.75 and 572.33

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Solution

The fourth proportional to 648.47, 972.75 and 572.33 is: 858.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.47 : 972.75 = 572.33 : x
  2. Step 2: Convert to fraction form
    648.47/972.75 = 572.33/x
  3. Step 3: Cross multiply
    648.47x = 972.75 × 572.33
  4. Step 4: Simplify right side
    648.47x = 556,734.01
  5. Step 5: Solve for x
    x = 556,734.01/648.47
  6. Step 6: Final answer
    x = 858.53

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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.