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Finding the Fourth Proportional to 583.32, 805.20 and 443.46

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Solution

The fourth proportional to 583.32, 805.20 and 443.46 is: 612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.32 : 805.20 = 443.46 : x
  2. Step 2: Convert to fraction form
    583.32/805.20 = 443.46/x
  3. Step 3: Cross multiply
    583.32x = 805.20 × 443.46
  4. Step 4: Simplify right side
    583.32x = 357,073.99
  5. Step 5: Solve for x
    x = 357,073.99/583.32
  6. Step 6: Final answer
    x = 612.14

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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.