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Finding the Fourth Proportional to 973.14, 1,459.90 and 315.18

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Solution

The fourth proportional to 973.14, 1,459.90 and 315.18 is: 472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.14 : 1,459.90 = 315.18 : x
  2. Step 2: Convert to fraction form
    973.14/1,459.90 = 315.18/x
  3. Step 3: Cross multiply
    973.14x = 1,459.90 × 315.18
  4. Step 4: Simplify right side
    973.14x = 460,130.49
  5. Step 5: Solve for x
    x = 460,130.49/973.14
  6. Step 6: Final answer
    x = 472.83

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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.