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Finding the Fourth Proportional to 581.24, 802.50 and 394.76

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Solution

The fourth proportional to 581.24, 802.50 and 394.76 is: 545.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.24 : 802.50 = 394.76 : x
  2. Step 2: Convert to fraction form
    581.24/802.50 = 394.76/x
  3. Step 3: Cross multiply
    581.24x = 802.50 × 394.76
  4. Step 4: Simplify right side
    581.24x = 316,794.90
  5. Step 5: Solve for x
    x = 316,794.90/581.24
  6. Step 6: Final answer
    x = 545.03

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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.