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Finding the Fourth Proportional to 651.56, 973.47 and 621.32

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Solution

The fourth proportional to 651.56, 973.47 and 621.32 is: 928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.56 : 973.47 = 621.32 : x
  2. Step 2: Convert to fraction form
    651.56/973.47 = 621.32/x
  3. Step 3: Cross multiply
    651.56x = 973.47 × 621.32
  4. Step 4: Simplify right side
    651.56x = 604,833.84
  5. Step 5: Solve for x
    x = 604,833.84/651.56
  6. Step 6: Final answer
    x = 928.29

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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.