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Finding the Fourth Proportional to 973.19, 1,458.41 and 486.59

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Solution

The fourth proportional to 973.19, 1,458.41 and 486.59 is: 729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.19 : 1,458.41 = 486.59 : x
  2. Step 2: Convert to fraction form
    973.19/1,458.41 = 486.59/x
  3. Step 3: Cross multiply
    973.19x = 1,458.41 × 486.59
  4. Step 4: Simplify right side
    973.19x = 709,638.00
  5. Step 5: Solve for x
    x = 709,638.00/973.19
  6. Step 6: Final answer
    x = 729.19

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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.