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Finding the Fourth Proportional to 362, 499.74 and 340.40

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Solution

The fourth proportional to 362, 499.74 and 340.40 is: 469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    362 : 499.74 = 340.40 : x
  2. Step 2: Convert to fraction form
    362/499.74 = 340.40/x
  3. Step 3: Cross multiply
    362x = 499.74 × 340.40
  4. Step 4: Simplify right side
    362x = 170,111.50
  5. Step 5: Solve for x
    x = 170,111.50/362
  6. Step 6: Final answer
    x = 469.92

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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.