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Finding the Fourth Proportional to 660.48, 904.80 and 652.80

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Solution

The fourth proportional to 660.48, 904.80 and 652.80 is: 894.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.48 : 904.80 = 652.80 : x
  2. Step 2: Convert to fraction form
    660.48/904.80 = 652.80/x
  3. Step 3: Cross multiply
    660.48x = 904.80 × 652.80
  4. Step 4: Simplify right side
    660.48x = 590,653.44
  5. Step 5: Solve for x
    x = 590,653.44/660.48
  6. Step 6: Final answer
    x = 894.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.