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Finding the Fourth Proportional to 976.59, 1,464.28 and 442.19

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Solution

The fourth proportional to 976.59, 1,464.28 and 442.19 is: 663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.59 : 1,464.28 = 442.19 : x
  2. Step 2: Convert to fraction form
    976.59/1,464.28 = 442.19/x
  3. Step 3: Cross multiply
    976.59x = 1,464.28 × 442.19
  4. Step 4: Simplify right side
    976.59x = 647,492.53
  5. Step 5: Solve for x
    x = 647,492.53/976.59
  6. Step 6: Final answer
    x = 663.01

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Double scale
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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.