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Finding the Fourth Proportional to 1,013.40, 1,518.88 and 464.83

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Solution

The fourth proportional to 1,013.40, 1,518.88 and 464.83 is: 696.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.40 : 1,518.88 = 464.83 : x
  2. Step 2: Convert to fraction form
    1,013.40/1,518.88 = 464.83/x
  3. Step 3: Cross multiply
    1,013.40x = 1,518.88 × 464.83
  4. Step 4: Simplify right side
    1,013.40x = 706,011.07
  5. Step 5: Solve for x
    x = 706,011.07/1,013.40
  6. Step 6: Final answer
    x = 696.68

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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.