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Finding the Fourth Proportional to 848.87, 1,172.91 and 654.06

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Solution

The fourth proportional to 848.87, 1,172.91 and 654.06 is: 903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.87 : 1,172.91 = 654.06 : x
  2. Step 2: Convert to fraction form
    848.87/1,172.91 = 654.06/x
  3. Step 3: Cross multiply
    848.87x = 1,172.91 × 654.06
  4. Step 4: Simplify right side
    848.87x = 767,153.51
  5. Step 5: Solve for x
    x = 767,153.51/848.87
  6. Step 6: Final answer
    x = 903.74

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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.