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Finding the Fourth Proportional to 445.68, 615.01 and 249.19

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Solution

The fourth proportional to 445.68, 615.01 and 249.19 is: 343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.68 : 615.01 = 249.19 : x
  2. Step 2: Convert to fraction form
    445.68/615.01 = 249.19/x
  3. Step 3: Cross multiply
    445.68x = 615.01 × 249.19
  4. Step 4: Simplify right side
    445.68x = 153,254.34
  5. Step 5: Solve for x
    x = 153,254.34/445.68
  6. Step 6: Final answer
    x = 343.87

Related Problems

Find fourth proportional to 222.84, 307.51 and 124.60
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.