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Finding the Fourth Proportional to 894.48, 1,341.54 and 317.40

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Solution

The fourth proportional to 894.48, 1,341.54 and 317.40 is: 476.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.48 : 1,341.54 = 317.40 : x
  2. Step 2: Convert to fraction form
    894.48/1,341.54 = 317.40/x
  3. Step 3: Cross multiply
    894.48x = 1,341.54 × 317.40
  4. Step 4: Simplify right side
    894.48x = 425,804.80
  5. Step 5: Solve for x
    x = 425,804.80/894.48
  6. Step 6: Final answer
    x = 476.04

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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.