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Finding the Fourth Proportional to 583.18, 803.73 and 417.40

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Solution

The fourth proportional to 583.18, 803.73 and 417.40 is: 575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.18 : 803.73 = 417.40 : x
  2. Step 2: Convert to fraction form
    583.18/803.73 = 417.40/x
  3. Step 3: Cross multiply
    583.18x = 803.73 × 417.40
  4. Step 4: Simplify right side
    583.18x = 335,476.90
  5. Step 5: Solve for x
    x = 335,476.90/583.18
  6. Step 6: Final answer
    x = 575.25

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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.