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Finding the Fourth Proportional to 672.02, 1,012.62 and 552.95

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Solution

The fourth proportional to 672.02, 1,012.62 and 552.95 is: 833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.02 : 1,012.62 = 552.95 : x
  2. Step 2: Convert to fraction form
    672.02/1,012.62 = 552.95/x
  3. Step 3: Cross multiply
    672.02x = 1,012.62 × 552.95
  4. Step 4: Simplify right side
    672.02x = 559,928.23
  5. Step 5: Solve for x
    x = 559,928.23/672.02
  6. Step 6: Final answer
    x = 833.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.