Home / 1,115.17-1,671.73-384.58

Finding the Fourth Proportional to 1,115.17, 1,671.73 and 384.58

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Solution

The fourth proportional to 1,115.17, 1,671.73 and 384.58 is: 576.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.17 : 1,671.73 = 384.58 : x
  2. Step 2: Convert to fraction form
    1,115.17/1,671.73 = 384.58/x
  3. Step 3: Cross multiply
    1,115.17x = 1,671.73 × 384.58
  4. Step 4: Simplify right side
    1,115.17x = 642,913.92
  5. Step 5: Solve for x
    x = 642,913.92/1,115.17
  6. Step 6: Final answer
    x = 576.52

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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.