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Finding the Fourth Proportional to 1,224.93, 1,829.83 and 981.93

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Solution

The fourth proportional to 1,224.93, 1,829.83 and 981.93 is: 1,466.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.93 : 1,829.83 = 981.93 : x
  2. Step 2: Convert to fraction form
    1,224.93/1,829.83 = 981.93/x
  3. Step 3: Cross multiply
    1,224.93x = 1,829.83 × 981.93
  4. Step 4: Simplify right side
    1,224.93x = 1,796,762.52
  5. Step 5: Solve for x
    x = 1,796,762.52/1,224.93
  6. Step 6: Final answer
    x = 1,466.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.