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Finding the Fourth Proportional to 1,323.66, 1,985.01 and 501.51

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Solution

The fourth proportional to 1,323.66, 1,985.01 and 501.51 is: 752.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.66 : 1,985.01 = 501.51 : x
  2. Step 2: Convert to fraction form
    1,323.66/1,985.01 = 501.51/x
  3. Step 3: Cross multiply
    1,323.66x = 1,985.01 × 501.51
  4. Step 4: Simplify right side
    1,323.66x = 995,502.37
  5. Step 5: Solve for x
    x = 995,502.37/1,323.66
  6. Step 6: Final answer
    x = 752.08

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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.