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Finding the Fourth Proportional to 349.16, 524.76 and 291.74

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Solution

The fourth proportional to 349.16, 524.76 and 291.74 is: 438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.16 : 524.76 = 291.74 : x
  2. Step 2: Convert to fraction form
    349.16/524.76 = 291.74/x
  3. Step 3: Cross multiply
    349.16x = 524.76 × 291.74
  4. Step 4: Simplify right side
    349.16x = 153,093.48
  5. Step 5: Solve for x
    x = 153,093.48/349.16
  6. Step 6: Final answer
    x = 438.46

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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.