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Finding the Fourth Proportional to 581.51, 801.05 and 553.77

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Solution

The fourth proportional to 581.51, 801.05 and 553.77 is: 762.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.51 : 801.05 = 553.77 : x
  2. Step 2: Convert to fraction form
    581.51/801.05 = 553.77/x
  3. Step 3: Cross multiply
    581.51x = 801.05 × 553.77
  4. Step 4: Simplify right side
    581.51x = 443,594.69
  5. Step 5: Solve for x
    x = 443,594.69/581.51
  6. Step 6: Final answer
    x = 762.83

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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.