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Finding the Fourth Proportional to 1,510.42, 2,265.74 and 414.70

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Solution

The fourth proportional to 1,510.42, 2,265.74 and 414.70 is: 622.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.42 : 2,265.74 = 414.70 : x
  2. Step 2: Convert to fraction form
    1,510.42/2,265.74 = 414.70/x
  3. Step 3: Cross multiply
    1,510.42x = 2,265.74 × 414.70
  4. Step 4: Simplify right side
    1,510.42x = 939,602.38
  5. Step 5: Solve for x
    x = 939,602.38/1,510.42
  6. Step 6: Final answer
    x = 622.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.