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Finding the Fourth Proportional to 944.69, 1,303.76 and 551.70

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Solution

The fourth proportional to 944.69, 1,303.76 and 551.70 is: 761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.69 : 1,303.76 = 551.70 : x
  2. Step 2: Convert to fraction form
    944.69/1,303.76 = 551.70/x
  3. Step 3: Cross multiply
    944.69x = 1,303.76 × 551.70
  4. Step 4: Simplify right side
    944.69x = 719,285.77
  5. Step 5: Solve for x
    x = 719,285.77/944.69
  6. Step 6: Final answer
    x = 761.40

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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.