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Finding the Fourth Proportional to 653.48, 972.79 and 623.62

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Solution

The fourth proportional to 653.48, 972.79 and 623.62 is: 928.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.48 : 972.79 = 623.62 : x
  2. Step 2: Convert to fraction form
    653.48/972.79 = 623.62/x
  3. Step 3: Cross multiply
    653.48x = 972.79 × 623.62
  4. Step 4: Simplify right side
    653.48x = 606,648.99
  5. Step 5: Solve for x
    x = 606,648.99/653.48
  6. Step 6: Final answer
    x = 928.33

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1.5x scale

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.