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Finding the Fourth Proportional to 524.22, 723.45 and 291.42

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Solution

The fourth proportional to 524.22, 723.45 and 291.42 is: 402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.22 : 723.45 = 291.42 : x
  2. Step 2: Convert to fraction form
    524.22/723.45 = 291.42/x
  3. Step 3: Cross multiply
    524.22x = 723.45 × 291.42
  4. Step 4: Simplify right side
    524.22x = 210,827.80
  5. Step 5: Solve for x
    x = 210,827.80/524.22
  6. Step 6: Final answer
    x = 402.17

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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.