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Finding the Fourth Proportional to 718.93, 1,076.58 and 603.07

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Solution

The fourth proportional to 718.93, 1,076.58 and 603.07 is: 903.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.93 : 1,076.58 = 603.07 : x
  2. Step 2: Convert to fraction form
    718.93/1,076.58 = 603.07/x
  3. Step 3: Cross multiply
    718.93x = 1,076.58 × 603.07
  4. Step 4: Simplify right side
    718.93x = 649,253.10
  5. Step 5: Solve for x
    x = 649,253.10/718.93
  6. Step 6: Final answer
    x = 903.08

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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.