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Finding the Fourth Proportional to 1,313.88, 1,813.56 and 848.04

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Solution

The fourth proportional to 1,313.88, 1,813.56 and 848.04 is: 1,170.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.88 : 1,813.56 = 848.04 : x
  2. Step 2: Convert to fraction form
    1,313.88/1,813.56 = 848.04/x
  3. Step 3: Cross multiply
    1,313.88x = 1,813.56 × 848.04
  4. Step 4: Simplify right side
    1,313.88x = 1,537,971.42
  5. Step 5: Solve for x
    x = 1,537,971.42/1,313.88
  6. Step 6: Final answer
    x = 1,170.56

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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.