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Finding the Fourth Proportional to 581.74, 802.32 and 493.45

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Solution

The fourth proportional to 581.74, 802.32 and 493.45 is: 680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.74 : 802.32 = 493.45 : x
  2. Step 2: Convert to fraction form
    581.74/802.32 = 493.45/x
  3. Step 3: Cross multiply
    581.74x = 802.32 × 493.45
  4. Step 4: Simplify right side
    581.74x = 395,903.96
  5. Step 5: Solve for x
    x = 395,903.96/581.74
  6. Step 6: Final answer
    x = 680.55

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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.