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Finding the Fourth Proportional to 897, 1,346.40 and 377.28

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Solution

The fourth proportional to 897, 1,346.40 and 377.28 is: 566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    897 : 1,346.40 = 377.28 : x
  2. Step 2: Convert to fraction form
    897/1,346.40 = 377.28/x
  3. Step 3: Cross multiply
    897x = 1,346.40 × 377.28
  4. Step 4: Simplify right side
    897x = 507,969.79
  5. Step 5: Solve for x
    x = 507,969.79/897
  6. Step 6: Final answer
    x = 566.30

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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.