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Finding the Fourth Proportional to 652.14, 971.58 and 621.18

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Solution

The fourth proportional to 652.14, 971.58 and 621.18 is: 925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.14 : 971.58 = 621.18 : x
  2. Step 2: Convert to fraction form
    652.14/971.58 = 621.18/x
  3. Step 3: Cross multiply
    652.14x = 971.58 × 621.18
  4. Step 4: Simplify right side
    652.14x = 603,526.06
  5. Step 5: Solve for x
    x = 603,526.06/652.14
  6. Step 6: Final answer
    x = 925.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.