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Finding the Fourth Proportional to 783.06, 1,175.01 and 436.35

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Solution

The fourth proportional to 783.06, 1,175.01 and 436.35 is: 654.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.06 : 1,175.01 = 436.35 : x
  2. Step 2: Convert to fraction form
    783.06/1,175.01 = 436.35/x
  3. Step 3: Cross multiply
    783.06x = 1,175.01 × 436.35
  4. Step 4: Simplify right side
    783.06x = 512,715.61
  5. Step 5: Solve for x
    x = 512,715.61/783.06
  6. Step 6: Final answer
    x = 654.76

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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.