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Finding the Fourth Proportional to 616.60, 852.12 and 518.16

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Solution

The fourth proportional to 616.60, 852.12 and 518.16 is: 716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.60 : 852.12 = 518.16 : x
  2. Step 2: Convert to fraction form
    616.60/852.12 = 518.16/x
  3. Step 3: Cross multiply
    616.60x = 852.12 × 518.16
  4. Step 4: Simplify right side
    616.60x = 441,534.50
  5. Step 5: Solve for x
    x = 441,534.50/616.60
  6. Step 6: Final answer
    x = 716.08

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1.5x scale

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.