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Finding the Fourth Proportional to 873.93, 1,206.03 and 500.91

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Solution

The fourth proportional to 873.93, 1,206.03 and 500.91 is: 691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.93 : 1,206.03 = 500.91 : x
  2. Step 2: Convert to fraction form
    873.93/1,206.03 = 500.91/x
  3. Step 3: Cross multiply
    873.93x = 1,206.03 × 500.91
  4. Step 4: Simplify right side
    873.93x = 604,106.09
  5. Step 5: Solve for x
    x = 604,106.09/873.93
  6. Step 6: Final answer
    x = 691.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.