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Finding the Fourth Proportional to 1,210.10, 1,815.69 and 632.93

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Solution

The fourth proportional to 1,210.10, 1,815.69 and 632.93 is: 949.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.10 : 1,815.69 = 632.93 : x
  2. Step 2: Convert to fraction form
    1,210.10/1,815.69 = 632.93/x
  3. Step 3: Cross multiply
    1,210.10x = 1,815.69 × 632.93
  4. Step 4: Simplify right side
    1,210.10x = 1,149,204.67
  5. Step 5: Solve for x
    x = 1,149,204.67/1,210.10
  6. Step 6: Final answer
    x = 949.68

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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.