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Finding the Fourth Proportional to 929.46, 1,386.67 and 895.84

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Solution

The fourth proportional to 929.46, 1,386.67 and 895.84 is: 1,336.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.46 : 1,386.67 = 895.84 : x
  2. Step 2: Convert to fraction form
    929.46/1,386.67 = 895.84/x
  3. Step 3: Cross multiply
    929.46x = 1,386.67 × 895.84
  4. Step 4: Simplify right side
    929.46x = 1,242,234.45
  5. Step 5: Solve for x
    x = 1,242,234.45/929.46
  6. Step 6: Final answer
    x = 1,336.51

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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.