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Finding the Fourth Proportional to 944.25, 1,303.08 and 551.55

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Solution

The fourth proportional to 944.25, 1,303.08 and 551.55 is: 761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.25 : 1,303.08 = 551.55 : x
  2. Step 2: Convert to fraction form
    944.25/1,303.08 = 551.55/x
  3. Step 3: Cross multiply
    944.25x = 1,303.08 × 551.55
  4. Step 4: Simplify right side
    944.25x = 718,713.77
  5. Step 5: Solve for x
    x = 718,713.77/944.25
  6. Step 6: Final answer
    x = 761.15

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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.