Home / 930.12-1,283.58-557.04

Finding the Fourth Proportional to 930.12, 1,283.58 and 557.04

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Solution

The fourth proportional to 930.12, 1,283.58 and 557.04 is: 768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.12 : 1,283.58 = 557.04 : x
  2. Step 2: Convert to fraction form
    930.12/1,283.58 = 557.04/x
  3. Step 3: Cross multiply
    930.12x = 1,283.58 × 557.04
  4. Step 4: Simplify right side
    930.12x = 715,005.40
  5. Step 5: Solve for x
    x = 715,005.40/930.12
  6. Step 6: Final answer
    x = 768.72

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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.