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Finding the Fourth Proportional to 619.17, 929.11 and 248.90

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Solution

The fourth proportional to 619.17, 929.11 and 248.90 is: 373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.17 : 929.11 = 248.90 : x
  2. Step 2: Convert to fraction form
    619.17/929.11 = 248.90/x
  3. Step 3: Cross multiply
    619.17x = 929.11 × 248.90
  4. Step 4: Simplify right side
    619.17x = 231,253.99
  5. Step 5: Solve for x
    x = 231,253.99/619.17
  6. Step 6: Final answer
    x = 373.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 620.17, 930.61 and 249.90
Similar ratio
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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.