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Finding the Fourth Proportional to 581.53, 802.51 and 319.55

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Solution

The fourth proportional to 581.53, 802.51 and 319.55 is: 440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.53 : 802.51 = 319.55 : x
  2. Step 2: Convert to fraction form
    581.53/802.51 = 319.55/x
  3. Step 3: Cross multiply
    581.53x = 802.51 × 319.55
  4. Step 4: Simplify right side
    581.53x = 256,440.56
  5. Step 5: Solve for x
    x = 256,440.56/581.53
  6. Step 6: Final answer
    x = 440.97

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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.