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Finding the Fourth Proportional to 581.16, 802.05 and 319.22

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Solution

The fourth proportional to 581.16, 802.05 and 319.22 is: 440.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.16 : 802.05 = 319.22 : x
  2. Step 2: Convert to fraction form
    581.16/802.05 = 319.22/x
  3. Step 3: Cross multiply
    581.16x = 802.05 × 319.22
  4. Step 4: Simplify right side
    581.16x = 256,032.41
  5. Step 5: Solve for x
    x = 256,032.41/581.16
  6. Step 6: Final answer
    x = 440.55

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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.