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Finding the Fourth Proportional to 843.64, 1,265.46 and 555.01

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Solution

The fourth proportional to 843.64, 1,265.46 and 555.01 is: 832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.64 : 1,265.46 = 555.01 : x
  2. Step 2: Convert to fraction form
    843.64/1,265.46 = 555.01/x
  3. Step 3: Cross multiply
    843.64x = 1,265.46 × 555.01
  4. Step 4: Simplify right side
    843.64x = 702,342.95
  5. Step 5: Solve for x
    x = 702,342.95/843.64
  6. Step 6: Final answer
    x = 832.52

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Double scale
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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.