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Finding the Fourth Proportional to 356, 530.98 and 349.85

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Solution

The fourth proportional to 356, 530.98 and 349.85 is: 521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356 : 530.98 = 349.85 : x
  2. Step 2: Convert to fraction form
    356/530.98 = 349.85/x
  3. Step 3: Cross multiply
    356x = 530.98 × 349.85
  4. Step 4: Simplify right side
    356x = 185,763.35
  5. Step 5: Solve for x
    x = 185,763.35/356
  6. Step 6: Final answer
    x = 521.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.