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Finding the Fourth Proportional to 558.40, 837.36 and 173.68

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Solution

The fourth proportional to 558.40, 837.36 and 173.68 is: 260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.40 : 837.36 = 173.68 : x
  2. Step 2: Convert to fraction form
    558.40/837.36 = 173.68/x
  3. Step 3: Cross multiply
    558.40x = 837.36 × 173.68
  4. Step 4: Simplify right side
    558.40x = 145,432.68
  5. Step 5: Solve for x
    x = 145,432.68/558.40
  6. Step 6: Final answer
    x = 260.45

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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.