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Finding the Fourth Proportional to 788.97, 1,088.74 and 457.37

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Solution

The fourth proportional to 788.97, 1,088.74 and 457.37 is: 631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.97 : 1,088.74 = 457.37 : x
  2. Step 2: Convert to fraction form
    788.97/1,088.74 = 457.37/x
  3. Step 3: Cross multiply
    788.97x = 1,088.74 × 457.37
  4. Step 4: Simplify right side
    788.97x = 497,957.01
  5. Step 5: Solve for x
    x = 497,957.01/788.97
  6. Step 6: Final answer
    x = 631.15

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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.