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Finding the Fourth Proportional to 944.42, 1,302.80 and 551.39

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Solution

The fourth proportional to 944.42, 1,302.80 and 551.39 is: 760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.42 : 1,302.80 = 551.39 : x
  2. Step 2: Convert to fraction form
    944.42/1,302.80 = 551.39/x
  3. Step 3: Cross multiply
    944.42x = 1,302.80 × 551.39
  4. Step 4: Simplify right side
    944.42x = 718,341.62
  5. Step 5: Solve for x
    x = 718,341.62/944.42
  6. Step 6: Final answer
    x = 760.62

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Double scale
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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.