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Finding the Fourth Proportional to 832.45, 1,148.02 and 570.55

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Solution

The fourth proportional to 832.45, 1,148.02 and 570.55 is: 786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.45 : 1,148.02 = 570.55 : x
  2. Step 2: Convert to fraction form
    832.45/1,148.02 = 570.55/x
  3. Step 3: Cross multiply
    832.45x = 1,148.02 × 570.55
  4. Step 4: Simplify right side
    832.45x = 655,002.81
  5. Step 5: Solve for x
    x = 655,002.81/832.45
  6. Step 6: Final answer
    x = 786.84

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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.