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Finding the Fourth Proportional to 1,000.20, 1,500.40 and 452.46

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Solution

The fourth proportional to 1,000.20, 1,500.40 and 452.46 is: 678.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000.20 : 1,500.40 = 452.46 : x
  2. Step 2: Convert to fraction form
    1,000.20/1,500.40 = 452.46/x
  3. Step 3: Cross multiply
    1,000.20x = 1,500.40 × 452.46
  4. Step 4: Simplify right side
    1,000.20x = 678,870.98
  5. Step 5: Solve for x
    x = 678,870.98/1,000.20
  6. Step 6: Final answer
    x = 678.74

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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.