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Finding the Fourth Proportional to 894.65, 1,341.47 and 278.18

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Solution

The fourth proportional to 894.65, 1,341.47 and 278.18 is: 417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.65 : 1,341.47 = 278.18 : x
  2. Step 2: Convert to fraction form
    894.65/1,341.47 = 278.18/x
  3. Step 3: Cross multiply
    894.65x = 1,341.47 × 278.18
  4. Step 4: Simplify right side
    894.65x = 373,170.12
  5. Step 5: Solve for x
    x = 373,170.12/894.65
  6. Step 6: Final answer
    x = 417.11

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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.