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Finding the Fourth Proportional to 581.06, 801.68 and 403.74

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Solution

The fourth proportional to 581.06, 801.68 and 403.74 is: 557.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.06 : 801.68 = 403.74 : x
  2. Step 2: Convert to fraction form
    581.06/801.68 = 403.74/x
  3. Step 3: Cross multiply
    581.06x = 801.68 × 403.74
  4. Step 4: Simplify right side
    581.06x = 323,670.28
  5. Step 5: Solve for x
    x = 323,670.28/581.06
  6. Step 6: Final answer
    x = 557.03

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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.