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Finding the Fourth Proportional to 987.50, 1,482.06 and 622.46

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Solution

The fourth proportional to 987.50, 1,482.06 and 622.46 is: 934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.50 : 1,482.06 = 622.46 : x
  2. Step 2: Convert to fraction form
    987.50/1,482.06 = 622.46/x
  3. Step 3: Cross multiply
    987.50x = 1,482.06 × 622.46
  4. Step 4: Simplify right side
    987.50x = 922,523.07
  5. Step 5: Solve for x
    x = 922,523.07/987.50
  6. Step 6: Final answer
    x = 934.20

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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.