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Finding the Fourth Proportional to 541.60, 747.60 and 431.20

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Solution

The fourth proportional to 541.60, 747.60 and 431.20 is: 595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.60 : 747.60 = 431.20 : x
  2. Step 2: Convert to fraction form
    541.60/747.60 = 431.20/x
  3. Step 3: Cross multiply
    541.60x = 747.60 × 431.20
  4. Step 4: Simplify right side
    541.60x = 322,365.12
  5. Step 5: Solve for x
    x = 322,365.12/541.60
  6. Step 6: Final answer
    x = 595.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.