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Finding the Fourth Proportional to 555.33, 823.69 and 547.13

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Solution

The fourth proportional to 555.33, 823.69 and 547.13 is: 811.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.33 : 823.69 = 547.13 : x
  2. Step 2: Convert to fraction form
    555.33/823.69 = 547.13/x
  3. Step 3: Cross multiply
    555.33x = 823.69 × 547.13
  4. Step 4: Simplify right side
    555.33x = 450,667.48
  5. Step 5: Solve for x
    x = 450,667.48/555.33
  6. Step 6: Final answer
    x = 811.53

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.