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Finding the Fourth Proportional to 374.40, 560.88 and 325.62

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Solution

The fourth proportional to 374.40, 560.88 and 325.62 is: 487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.40 : 560.88 = 325.62 : x
  2. Step 2: Convert to fraction form
    374.40/560.88 = 325.62/x
  3. Step 3: Cross multiply
    374.40x = 560.88 × 325.62
  4. Step 4: Simplify right side
    374.40x = 182,633.75
  5. Step 5: Solve for x
    x = 182,633.75/374.40
  6. Step 6: Final answer
    x = 487.80

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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.