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Finding the Fourth Proportional to 788.93, 1,088.76 and 457.37

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Solution

The fourth proportional to 788.93, 1,088.76 and 457.37 is: 631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.93 : 1,088.76 = 457.37 : x
  2. Step 2: Convert to fraction form
    788.93/1,088.76 = 457.37/x
  3. Step 3: Cross multiply
    788.93x = 1,088.76 × 457.37
  4. Step 4: Simplify right side
    788.93x = 497,960.72
  5. Step 5: Solve for x
    x = 497,960.72/788.93
  6. Step 6: Final answer
    x = 631.19

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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.