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Finding the Fourth Proportional to 438.76, 656.46 and 373.60

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Solution

The fourth proportional to 438.76, 656.46 and 373.60 is: 558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.76 : 656.46 = 373.60 : x
  2. Step 2: Convert to fraction form
    438.76/656.46 = 373.60/x
  3. Step 3: Cross multiply
    438.76x = 656.46 × 373.60
  4. Step 4: Simplify right side
    438.76x = 245,253.46
  5. Step 5: Solve for x
    x = 245,253.46/438.76
  6. Step 6: Final answer
    x = 558.97

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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.