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Finding the Fourth Proportional to 610.60, 838.56 and 512.18

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Solution

The fourth proportional to 610.60, 838.56 and 512.18 is: 703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.60 : 838.56 = 512.18 : x
  2. Step 2: Convert to fraction form
    610.60/838.56 = 512.18/x
  3. Step 3: Cross multiply
    610.60x = 838.56 × 512.18
  4. Step 4: Simplify right side
    610.60x = 429,491.10
  5. Step 5: Solve for x
    x = 429,491.10/610.60
  6. Step 6: Final answer
    x = 703.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.