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Finding the Fourth Proportional to 788.47, 1,088.10 and 434.39

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Solution

The fourth proportional to 788.47, 1,088.10 and 434.39 is: 599.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.47 : 1,088.10 = 434.39 : x
  2. Step 2: Convert to fraction form
    788.47/1,088.10 = 434.39/x
  3. Step 3: Cross multiply
    788.47x = 1,088.10 × 434.39
  4. Step 4: Simplify right side
    788.47x = 472,659.76
  5. Step 5: Solve for x
    x = 472,659.76/788.47
  6. Step 6: Final answer
    x = 599.46

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1.5x scale

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.