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Finding the Fourth Proportional to 616.18, 921.30 and 601.60

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Solution

The fourth proportional to 616.18, 921.30 and 601.60 is: 899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.18 : 921.30 = 601.60 : x
  2. Step 2: Convert to fraction form
    616.18/921.30 = 601.60/x
  3. Step 3: Cross multiply
    616.18x = 921.30 × 601.60
  4. Step 4: Simplify right side
    616.18x = 554,254.08
  5. Step 5: Solve for x
    x = 554,254.08/616.18
  6. Step 6: Final answer
    x = 899.50

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1.5x scale

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.