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Finding the Fourth Proportional to 524.58, 723.94 and 291.72

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Solution

The fourth proportional to 524.58, 723.94 and 291.72 is: 402.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.58 : 723.94 = 291.72 : x
  2. Step 2: Convert to fraction form
    524.58/723.94 = 291.72/x
  3. Step 3: Cross multiply
    524.58x = 723.94 × 291.72
  4. Step 4: Simplify right side
    524.58x = 211,187.78
  5. Step 5: Solve for x
    x = 211,187.78/524.58
  6. Step 6: Final answer
    x = 402.58

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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.