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Finding the Fourth Proportional to 583.16, 805.02 and 406.71

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Solution

The fourth proportional to 583.16, 805.02 and 406.71 is: 561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.16 : 805.02 = 406.71 : x
  2. Step 2: Convert to fraction form
    583.16/805.02 = 406.71/x
  3. Step 3: Cross multiply
    583.16x = 805.02 × 406.71
  4. Step 4: Simplify right side
    583.16x = 327,409.68
  5. Step 5: Solve for x
    x = 327,409.68/583.16
  6. Step 6: Final answer
    x = 561.45

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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.