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Finding the Fourth Proportional to 349.72, 524.66 and 291.64

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Solution

The fourth proportional to 349.72, 524.66 and 291.64 is: 437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.72 : 524.66 = 291.64 : x
  2. Step 2: Convert to fraction form
    349.72/524.66 = 291.64/x
  3. Step 3: Cross multiply
    349.72x = 524.66 × 291.64
  4. Step 4: Simplify right side
    349.72x = 153,011.84
  5. Step 5: Solve for x
    x = 153,011.84/349.72
  6. Step 6: Final answer
    x = 437.53

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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.