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Finding the Fourth Proportional to 710.83, 1,066.20 and 481.51

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Solution

The fourth proportional to 710.83, 1,066.20 and 481.51 is: 722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.83 : 1,066.20 = 481.51 : x
  2. Step 2: Convert to fraction form
    710.83/1,066.20 = 481.51/x
  3. Step 3: Cross multiply
    710.83x = 1,066.20 × 481.51
  4. Step 4: Simplify right side
    710.83x = 513,385.96
  5. Step 5: Solve for x
    x = 513,385.96/710.83
  6. Step 6: Final answer
    x = 722.23

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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.