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Finding the Fourth Proportional to 351.25, 530.08 and 349.12

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Solution

The fourth proportional to 351.25, 530.08 and 349.12 is: 526.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.25 : 530.08 = 349.12 : x
  2. Step 2: Convert to fraction form
    351.25/530.08 = 349.12/x
  3. Step 3: Cross multiply
    351.25x = 530.08 × 349.12
  4. Step 4: Simplify right side
    351.25x = 185,061.53
  5. Step 5: Solve for x
    x = 185,061.53/351.25
  6. Step 6: Final answer
    x = 526.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.