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Finding the Fourth Proportional to 1,482.74, 2,224.19 and 661.07

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Solution

The fourth proportional to 1,482.74, 2,224.19 and 661.07 is: 991.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.74 : 2,224.19 = 661.07 : x
  2. Step 2: Convert to fraction form
    1,482.74/2,224.19 = 661.07/x
  3. Step 3: Cross multiply
    1,482.74x = 2,224.19 × 661.07
  4. Step 4: Simplify right side
    1,482.74x = 1,470,330.86
  5. Step 5: Solve for x
    x = 1,470,330.86/1,482.74
  6. Step 6: Final answer
    x = 991.63

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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.