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Finding the Fourth Proportional to 788.52, 1,088.10 and 434.40

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Solution

The fourth proportional to 788.52, 1,088.10 and 434.40 is: 599.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.52 : 1,088.10 = 434.40 : x
  2. Step 2: Convert to fraction form
    788.52/1,088.10 = 434.40/x
  3. Step 3: Cross multiply
    788.52x = 1,088.10 × 434.40
  4. Step 4: Simplify right side
    788.52x = 472,670.64
  5. Step 5: Solve for x
    x = 472,670.64/788.52
  6. Step 6: Final answer
    x = 599.44

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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.