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Finding the Fourth Proportional to 696.02, 1,044.22 and 421.62

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Solution

The fourth proportional to 696.02, 1,044.22 and 421.62 is: 632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.02 : 1,044.22 = 421.62 : x
  2. Step 2: Convert to fraction form
    696.02/1,044.22 = 421.62/x
  3. Step 3: Cross multiply
    696.02x = 1,044.22 × 421.62
  4. Step 4: Simplify right side
    696.02x = 440,264.04
  5. Step 5: Solve for x
    x = 440,264.04/696.02
  6. Step 6: Final answer
    x = 632.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.