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Finding the Fourth Proportional to 535.95, 740.13 and 418.25

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Solution

The fourth proportional to 535.95, 740.13 and 418.25 is: 577.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.95 : 740.13 = 418.25 : x
  2. Step 2: Convert to fraction form
    535.95/740.13 = 418.25/x
  3. Step 3: Cross multiply
    535.95x = 740.13 × 418.25
  4. Step 4: Simplify right side
    535.95x = 309,559.37
  5. Step 5: Solve for x
    x = 309,559.37/535.95
  6. Step 6: Final answer
    x = 577.59

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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.