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Finding the Fourth Proportional to 616.60, 846.74 and 518.19

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Solution

The fourth proportional to 616.60, 846.74 and 518.19 is: 711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.60 : 846.74 = 518.19 : x
  2. Step 2: Convert to fraction form
    616.60/846.74 = 518.19/x
  3. Step 3: Cross multiply
    616.60x = 846.74 × 518.19
  4. Step 4: Simplify right side
    616.60x = 438,772.20
  5. Step 5: Solve for x
    x = 438,772.20/616.60
  6. Step 6: Final answer
    x = 711.60

Related Problems

Find fourth proportional to 308.30, 423.37 and 259.10
Half scale
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Double scale
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Similar ratio
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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.