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Finding the Fourth Proportional to 1,323.99, 1,985.85 and 350.19

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Solution

The fourth proportional to 1,323.99, 1,985.85 and 350.19 is: 525.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.99 : 1,985.85 = 350.19 : x
  2. Step 2: Convert to fraction form
    1,323.99/1,985.85 = 350.19/x
  3. Step 3: Cross multiply
    1,323.99x = 1,985.85 × 350.19
  4. Step 4: Simplify right side
    1,323.99x = 695,424.81
  5. Step 5: Solve for x
    x = 695,424.81/1,323.99
  6. Step 6: Final answer
    x = 525.25

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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.