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Finding the Fourth Proportional to 651.48, 899.06 and 356.77

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Solution

The fourth proportional to 651.48, 899.06 and 356.77 is: 492.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.48 : 899.06 = 356.77 : x
  2. Step 2: Convert to fraction form
    651.48/899.06 = 356.77/x
  3. Step 3: Cross multiply
    651.48x = 899.06 × 356.77
  4. Step 4: Simplify right side
    651.48x = 320,755.69
  5. Step 5: Solve for x
    x = 320,755.69/651.48
  6. Step 6: Final answer
    x = 492.35

Related Problems

Find fourth proportional to 325.74, 449.53 and 178.38
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Double scale
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1.5x scale

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.