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Finding the Fourth Proportional to 700.68, 1,045.59 and 674.22

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Solution

The fourth proportional to 700.68, 1,045.59 and 674.22 is: 1,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.68 : 1,045.59 = 674.22 : x
  2. Step 2: Convert to fraction form
    700.68/1,045.59 = 674.22/x
  3. Step 3: Cross multiply
    700.68x = 1,045.59 × 674.22
  4. Step 4: Simplify right side
    700.68x = 704,957.69
  5. Step 5: Solve for x
    x = 704,957.69/700.68
  6. Step 6: Final answer
    x = 1,006.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.