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Finding the Fourth Proportional to 970.70, 1,455.82 and 483.63

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Solution

The fourth proportional to 970.70, 1,455.82 and 483.63 is: 725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.70 : 1,455.82 = 483.63 : x
  2. Step 2: Convert to fraction form
    970.70/1,455.82 = 483.63/x
  3. Step 3: Cross multiply
    970.70x = 1,455.82 × 483.63
  4. Step 4: Simplify right side
    970.70x = 704,078.23
  5. Step 5: Solve for x
    x = 704,078.23/970.70
  6. Step 6: Final answer
    x = 725.33

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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.