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Finding the Fourth Proportional to 581.21, 802.05 and 360.53

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Solution

The fourth proportional to 581.21, 802.05 and 360.53 is: 497.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.21 : 802.05 = 360.53 : x
  2. Step 2: Convert to fraction form
    581.21/802.05 = 360.53/x
  3. Step 3: Cross multiply
    581.21x = 802.05 × 360.53
  4. Step 4: Simplify right side
    581.21x = 289,163.09
  5. Step 5: Solve for x
    x = 289,163.09/581.21
  6. Step 6: Final answer
    x = 497.52

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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.