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Finding the Fourth Proportional to 581.31, 802.20 and 360.32

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Solution

The fourth proportional to 581.31, 802.20 and 360.32 is: 497.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.31 : 802.20 = 360.32 : x
  2. Step 2: Convert to fraction form
    581.31/802.20 = 360.32/x
  3. Step 3: Cross multiply
    581.31x = 802.20 × 360.32
  4. Step 4: Simplify right side
    581.31x = 289,042.89
  5. Step 5: Solve for x
    x = 289,042.89/581.31
  6. Step 6: Final answer
    x = 497.23

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1.5x scale

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.