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Finding the Fourth Proportional to 542.30, 807.57 and 529.54

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Solution

The fourth proportional to 542.30, 807.57 and 529.54 is: 788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.30 : 807.57 = 529.54 : x
  2. Step 2: Convert to fraction form
    542.30/807.57 = 529.54/x
  3. Step 3: Cross multiply
    542.30x = 807.57 × 529.54
  4. Step 4: Simplify right side
    542.30x = 427,638.60
  5. Step 5: Solve for x
    x = 427,638.60/542.30
  6. Step 6: Final answer
    x = 788.57

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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.