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Finding the Fourth Proportional to 657.99, 909.12 and 651.51

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Solution

The fourth proportional to 657.99, 909.12 and 651.51 is: 900.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.99 : 909.12 = 651.51 : x
  2. Step 2: Convert to fraction form
    657.99/909.12 = 651.51/x
  3. Step 3: Cross multiply
    657.99x = 909.12 × 651.51
  4. Step 4: Simplify right side
    657.99x = 592,300.77
  5. Step 5: Solve for x
    x = 592,300.77/657.99
  6. Step 6: Final answer
    x = 900.17

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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.