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Finding the Fourth Proportional to 591.71, 891.28 and 555.26

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Solution

The fourth proportional to 591.71, 891.28 and 555.26 is: 836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.71 : 891.28 = 555.26 : x
  2. Step 2: Convert to fraction form
    591.71/891.28 = 555.26/x
  3. Step 3: Cross multiply
    591.71x = 891.28 × 555.26
  4. Step 4: Simplify right side
    591.71x = 494,886.81
  5. Step 5: Solve for x
    x = 494,886.81/591.71
  6. Step 6: Final answer
    x = 836.37

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.