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Finding the Fourth Proportional to 521.60, 718.08 and 443.52

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Solution

The fourth proportional to 521.60, 718.08 and 443.52 is: 610.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.60 : 718.08 = 443.52 : x
  2. Step 2: Convert to fraction form
    521.60/718.08 = 443.52/x
  3. Step 3: Cross multiply
    521.60x = 718.08 × 443.52
  4. Step 4: Simplify right side
    521.60x = 318,482.84
  5. Step 5: Solve for x
    x = 318,482.84/521.60
  6. Step 6: Final answer
    x = 610.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.