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Finding the Fourth Proportional to 973.83, 1,458.91 and 487.23

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Solution

The fourth proportional to 973.83, 1,458.91 and 487.23 is: 729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.83 : 1,458.91 = 487.23 : x
  2. Step 2: Convert to fraction form
    973.83/1,458.91 = 487.23/x
  3. Step 3: Cross multiply
    973.83x = 1,458.91 × 487.23
  4. Step 4: Simplify right side
    973.83x = 710,824.72
  5. Step 5: Solve for x
    x = 710,824.72/973.83
  6. Step 6: Final answer
    x = 729.93

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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.