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Finding the Fourth Proportional to 788.08, 1,088.13 and 508.48

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Solution

The fourth proportional to 788.08, 1,088.13 and 508.48 is: 702.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.08 : 1,088.13 = 508.48 : x
  2. Step 2: Convert to fraction form
    788.08/1,088.13 = 508.48/x
  3. Step 3: Cross multiply
    788.08x = 1,088.13 × 508.48
  4. Step 4: Simplify right side
    788.08x = 553,285.68
  5. Step 5: Solve for x
    x = 553,285.68/788.08
  6. Step 6: Final answer
    x = 702.07

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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.