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Finding the Fourth Proportional to 350.59, 525.88 and 90.59

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Solution

The fourth proportional to 350.59, 525.88 and 90.59 is: 135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.59 : 525.88 = 90.59 : x
  2. Step 2: Convert to fraction form
    350.59/525.88 = 90.59/x
  3. Step 3: Cross multiply
    350.59x = 525.88 × 90.59
  4. Step 4: Simplify right side
    350.59x = 47,639.47
  5. Step 5: Solve for x
    x = 47,639.47/350.59
  6. Step 6: Final answer
    x = 135.88

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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.