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Finding the Fourth Proportional to 845.77, 1,166.40 and 531.06

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Solution

The fourth proportional to 845.77, 1,166.40 and 531.06 is: 732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.77 : 1,166.40 = 531.06 : x
  2. Step 2: Convert to fraction form
    845.77/1,166.40 = 531.06/x
  3. Step 3: Cross multiply
    845.77x = 1,166.40 × 531.06
  4. Step 4: Simplify right side
    845.77x = 619,428.38
  5. Step 5: Solve for x
    x = 619,428.38/845.77
  6. Step 6: Final answer
    x = 732.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.