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Finding the Fourth Proportional to 924.30, 1,275.68 and 551.57

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Solution

The fourth proportional to 924.30, 1,275.68 and 551.57 is: 761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.30 : 1,275.68 = 551.57 : x
  2. Step 2: Convert to fraction form
    924.30/1,275.68 = 551.57/x
  3. Step 3: Cross multiply
    924.30x = 1,275.68 × 551.57
  4. Step 4: Simplify right side
    924.30x = 703,621.82
  5. Step 5: Solve for x
    x = 703,621.82/924.30
  6. Step 6: Final answer
    x = 761.25

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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.