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Finding the Fourth Proportional to 973.65, 1,461.06 and 388.55

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Solution

The fourth proportional to 973.65, 1,461.06 and 388.55 is: 583.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.65 : 1,461.06 = 388.55 : x
  2. Step 2: Convert to fraction form
    973.65/1,461.06 = 388.55/x
  3. Step 3: Cross multiply
    973.65x = 1,461.06 × 388.55
  4. Step 4: Simplify right side
    973.65x = 567,694.86
  5. Step 5: Solve for x
    x = 567,694.86/973.65
  6. Step 6: Final answer
    x = 583.06

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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.