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Finding the Fourth Proportional to 973.68, 1,460.40 and 396.56

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Solution

The fourth proportional to 973.68, 1,460.40 and 396.56 is: 594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.68 : 1,460.40 = 396.56 : x
  2. Step 2: Convert to fraction form
    973.68/1,460.40 = 396.56/x
  3. Step 3: Cross multiply
    973.68x = 1,460.40 × 396.56
  4. Step 4: Simplify right side
    973.68x = 579,136.22
  5. Step 5: Solve for x
    x = 579,136.22/973.68
  6. Step 6: Final answer
    x = 594.79

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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.