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Finding the Fourth Proportional to 373.09, 558.52 and 307.78

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Solution

The fourth proportional to 373.09, 558.52 and 307.78 is: 460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.09 : 558.52 = 307.78 : x
  2. Step 2: Convert to fraction form
    373.09/558.52 = 307.78/x
  3. Step 3: Cross multiply
    373.09x = 558.52 × 307.78
  4. Step 4: Simplify right side
    373.09x = 171,899.75
  5. Step 5: Solve for x
    x = 171,899.75/373.09
  6. Step 6: Final answer
    x = 460.75

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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.